Intrusion detector unit



FIG. 1 is a perspective view of an intrusion detector unit showing ournew design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a side elevational view thereof; and

FIG. 6 is a back elevational view thereof.

The ornamental design for an intrusion detector unit, as shown.